Simulation of real-time optical tomography reconstruction by photon trajectory application to strongly scattering media

1998 ◽  
Author(s):  
Vladimir V. Lyubimov ◽  
Olga V. Kravtsenyuk ◽  
Oleg V. Lyamtsev ◽  
Evgeny P. Mironov ◽  
Alexander G. Murzin ◽  
...  
Keyword(s):  
Real Time ◽  
Optical Tomography ◽  
Scattering Media ◽  
Tomography Reconstruction

Simulation of the real-time optical tomography reconstruction using photon trajectory application to the case of strongly scattering media

1998 ◽  
Author(s):  
Vladimir V. Lyubimov ◽  
Olga V. Kravtsenyuk ◽  
Oleg V. Lyamtsev ◽  
Evgeny P. Mironov ◽  
Alexander G. Murzin ◽  
...  
Keyword(s):  
Real Time ◽  
Optical Tomography ◽  
Scattering Media ◽  
The Real ◽  
Tomography Reconstruction

Application of the photon average trajectories method to real-time reconstruction of tissue inhomogeneities in diffuse optical tomography of strongly scattering media

2002 ◽  
Vol 47 (12) ◽  
pp. 2109-2128 ◽  
Author(s):  
Vladimir V Lyubimov ◽  
Alexander G Kalintsev ◽  
Alexander B Konovalov ◽  
Oleg V Lyamtsev ◽  
Olga V Kravtsenyuk ◽  
...  
Keyword(s):  
Real Time ◽  
Optical Tomography ◽  
Diffuse Optical Tomography ◽  
Scattering Media

Ultrasound-modulated optical tomography with real-time FFT

2000 ◽  
Author(s):  
Yong Yao ◽  
Da Xing ◽  
Yonghong He
Keyword(s):  
Real Time ◽  
Optical Tomography

scholarly journals Evaluating real-time image reconstruction in diffuse optical tomography using physiologically realistic test data

2015 ◽  
Vol 6 (12) ◽  
pp. 4719 ◽  
Author(s):  
Sabrina Brigadoi ◽  
Samuel Powell ◽  
Robert J. Cooper ◽  
Laura A. Dempsey ◽  
Simon Arridge ◽  
...  
Keyword(s):  
Image Reconstruction ◽  
Real Time ◽  
Test Data ◽  
Optical Tomography ◽  
Diffuse Optical Tomography ◽  
Real Time Image ◽  
Time Image

Real-time image reconstruction for various flow regimes using an optical tomography sensor in a gravity flow conveyor

2005 ◽  
Vol 16 (4) ◽  
pp. 399-411 ◽  
Author(s):  
Ruzairi Abdul Rahim ◽  
Pang Jon Fea ◽  
Chan Kok San ◽  
Leong Lai Chean
Keyword(s):  
Image Reconstruction ◽  
Real Time ◽  
Optical Tomography ◽  
Flow Regimes ◽  
Gravity Flow ◽  
Real Time Image ◽  
Time Image

scholarly journals A MATLAB-Based Boundary Data Simulator for Studying the Resistivity Reconstruction Using Neighbouring Current Pattern

2013 ◽  
Vol 2013 ◽  
pp. 1-15 ◽  
Author(s):  
Tushar Kanti Bera ◽  
J. Nagaraju
Keyword(s):  
Electrical Impedance Tomography ◽  
Boundary Data ◽  
Electrical Impedance ◽  
Optical Tomography ◽  
Current Pattern ◽  
Impedance Tomography ◽  
Reconstruction Software ◽  
Tomography Reconstruction ◽  
Input Variables ◽  
Solver Performance

Phantoms are essentially required to generate boundary data for studying the inverse solver performance in electrical impedance tomography (EIT). A MATLAB-based boundary data simulator (BDS) is developed to generate accurate boundary data using neighbouring current pattern for assessing the EIT inverse solvers. Domain diameter, inhomogeneity number, inhomogeneity geometry (shape, size, and position), background conductivity, and inhomogeneity conductivity are all set as BDS input variables. Different sets of boundary data are generated by changing the input variables of the BDS, and resistivity images are reconstructed using electrical impedance tomography and diffuse optical tomography reconstruction software (EIDORS). Results show that the BDS generates accurate boundary data for different types of single or multiple objects which are efficient enough to reconstruct the resistivity images for assessing the inverse solver. It is noticed that for the BDS with 2048 elements, the boundary data for all inhomogeneities with a diameter larger than 13.3% of that of the phantom are accurate enough to reconstruct the resistivity images in EIDORS-2D. By comparing the reconstructed image with an original geometry made in BDS, it would be easier to study the inverse solver performance and the origin of the boundary data error can be identified.

Optical Tomography With a Least Square Finite Element Formulation of the Collimated Irradiation in Frequency Domain

2010 ◽  
Author(s):  
Olivier Balima ◽  
Joan Boulanger ◽  
Andre´ Charette ◽  
Daniel Marceau
Keyword(s):  
Finite Element ◽  
Optical Properties ◽  
Frequency Domain ◽  
Complex Geometry ◽  
Numerical Study ◽  
Optical Tomography ◽  
Least Square ◽  
Finite Element Formulation ◽  
Element Formulation ◽  
Scattering Media

This paper presents a numerical study of optical tomography in frequency domain for the reconstruction of optical properties of scattering and absorbing media with collimated irradiation light sources. The forward model is a least square finite element formulation of the collimated irradiation problem where the intensity is separated into its collimated and scattered parts. This model does not use any empirical stabilization and moreover the collimated source direction is taken into account. The inversion uses a gradient type minimization method where the gradient is computed through an adjoint formulation. Scaling is used to avoid numerical round errors, as the output readings at detectors are very low. Numerical reconstructions of optical properties of absorbing and scattering media with simulated data (noised and noise-free) are achieved in a complex geometry with satisfactory results. The results show that complex geometries are well handled with the proposed method.

Real-time multispectral diffuse optical tomography system for imaging epileptic activity and connectivity

2013 ◽  
Author(s):  
Tao Zhang ◽  
Jianjun Yang ◽  
Junli Zhou ◽  
Hao Yang ◽  
Paul R. Carney ◽  
...  
Keyword(s):  
Real Time ◽  
Optical Tomography ◽  
Diffuse Optical Tomography ◽  
Epileptic Activity ◽  
Tomography System
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